Improvement in the manufacture of mattresses, seats, backs of sofas



J. L. KENDALL.

AImprovement in the Manufacture of Mattresses, Seats,

and Backs ofSofas, &c., from Paper-Pu|p,' Spunge, 8m.v

No. 130,223, Patented Aug. 6,1872.

MMM/L /m/m/m UNITED STATES PATENTOFFIGE.

JOHN L. KENDALL, OF FOXBOROUGH, MASSACHUSETTS.

IMPROVEMENT IN THE MANUFACTURE 0F MATTRESSESI SEATS, BACKS 0F SOFASl SLC., FROM PAPER-PULP, SPONGE, &c.

Specification forming part ofLetters Patent No. 130,223, dated August 6, 1872.

To all whom 'itmay concern:

Be it known that I, JOHN L. KENDALL, of Foxborough, in the county of Norfolk and State of Massachusetts, have invented a new and Improved Manufacture from Paper-Pulp and Sponge, &c.; and that the following is a full, clear, and exact description of the same, reference being had to the accompanying plate of drawing.

This invention relates to a new article of manufacture from paper-pulp and sponge, Sac., more especially intended for mattresses, seats and backs of sofas, chairs, &c. It is animprovement on the new manufacture for which I have already made application, dated May 13, 1872, for Letters Patent of the United States.

This new manufacture is composed of pieces of sponge, India rubber, cork, or other elastic and buoyant material or materials, molded with cotton, flax, hemp, or other fibers capable of pulping, and devices mechanically constructed to be springy or elastic-as, for instance, spiral springs, (cylindrical, conical, &c.,) with said springs within or across the thickness of the molded pulpy bers and sponge, &c.

In the accompanying` plate of drawing my new manufacture is illustrated, the figure vbeing a transverse vertical section. v

Inthe drawing, arepresents pieces of spon ge; b, cells or cavities made by the pulpy fibers, in

which cells are the sponge pieces a; c, conical spiral springs within and surrounded by the spongepieces a and cells b. These springs c are perpendicular to the thickness of sponge a and cells b.-

In the production of the new manufacture embraced by this invention, as the means of molding the brous pulp and sponge, &c., about the springs, an apparatus is employed that is constructed substantially similar to the apparatus described in the schedule annexed to the Letters Patent dated April 16, 1872, and numbered 125,740, issued to John L. Kendall and Richard H. Trested for improvements in molding articles from paper-pulp; and in its use as regards the molding of the paper-pulp and sponge substantially the mode of operation is employed as described in said Letters Patent and in the aforesaid application for Letters Patent, except that in the production of my new manufacture the springs which are to be surrounded by the molding of the paper-pulp and sponge, Sac., are located within that apparatus before the mixture of pulp and sponge, &c., is poured into the molding-reservoir.

In the location of these springs, one mode is to suspend them by lines from the top ot 1 covering and inclosin g them. Another mode is to locate them Within a frame by lines stretched across the frame, and then this frame set upon the top of the molding screen in reservoir, the springs being secured to the said lines.

The manufacture embraced herein, as before stated, is more especially intended for mattresses, seats and backs of chairs, &e. and to apply it for such purposes, obviously, no special instructions are herein needed; but it may be well to here observe that care should be taken that the springs are in the proper position for action. By the combination of springs with the paper-pulp and sponge, &c., increased elasticity is obtained, and while are reta-ined all the advantages of springs for mattresses, backs and seats for chairs, &c., by the surrounding flbers and sponge, &c., are obtained addititional and very important advantages, among them the following: that the springs are held more perfectly to their plane of action are braced; cannot wabblethat is, cannot cant7 over sidewise.

Although I have named the apparatus embraced by the Let-ters Patent aforesaid as one suitable to be used for the purposes ot' this invention, any other apparatus having a reservoir with a perforated mold block or screen at or near its bottom may be employed; and, therefore, in the carrying out of this invention, I do not intend to limit myself t0 the use of any particular apparatus, intending to employ any apparatus which may be found the best and the most suitable therefor. Furthermore, the suspension of the springs within the molding-reservoir may be variously accomplished other than the two modes herein described, also, the proportion of fibrous pulp to sponge may be four ounces of fibers to one pound of sponge, as described in my aforesaid application, or` a greater or less proportion of fiber to sponge, or vice versa, according as may be found necessary or most desirable. The size of the piece of sponge, 815e., depends somewhat upon the coarseness and size of the springs, and it may be well to here say that pieces can be used substantially larger than would be best to use were the springs omitted.

Witnesses:

ALBERT XV. BROWN, EDWIN W. BROWN. 

